what happened to the npc's who were part of our lives !

Just wondering, I've rescued Marshall Windsor countless times and yet he kept getting caught i presume cause i had to free him over and over again... but not so long ago i ran BRD a few times while leveling and we never freed him. So i'm wondering, is he still rotting in the jail down there?
That kept me thinking about other ones like Corki, Freeing knot with the Gordok Shackle Key, Emi Shortfuse that you help in gnomeregan to blow up the tunnels...
What happened to them ! did they pass away or are they enjoying their retirement somewhere in a shack near a lake?
who else do you remember well escorting or saving..?